Can you think of any three-dimensional shape that comprises of exactly two surfaces?

People make me, save me, change me, raise me. What am I?

A sundial has the fewest moving parts of any timepiece. Which has the most?

The following four words might seem abrupt to you. But you can make them meaningful by just adding vowels.
RDSH
GGPLNT
TMT
NN

Hint: All of them are vegetables.

Tarang football website was hacked by one of the players. Jack, the coach of Tarang has pointed out five players as the possible hacker.
Each suspected player made three statements from each suspected player and out of which two are true and one is false.

Joseph
A) I have not hacked the website.
B) I know nothing about hacking.
C) John did it.

Hazard
A) I have not hacked the website.
B) The website was attacked by one of the players.
C) I hate Shelly

Remy
A) I have not hacked the website.
B) I have never seen Oscar in my entire life.
C) I am sure John did it.

John
A) I have not hacked the website.
B) I am sure Oscar did it.
C) Joseph was lying when he said he did it.

Oscar
A) I have not hacked the website.
B) I am sure Hazard did it.
C) I used to be friend with Remy.

So who hacked the website?

How can you write nineteen in a manner that if we take out one, it becomes twenty?

One is to three as three is to five and five is to four and four is the magic number.
What is the pattern?

By what process could you make a 'Tea-Table' into food?

How many triangles can you count in the figure given?

Be active and find the killer in the picture Riddle below.